As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - CREW REPORTED SMOKE ALARM SOUNDED IN CREW REST AREA. EMERGENCY DECLARED FLIGHT RETURNED ORD LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FERRY FLIGHT TO AFW FOR FURTHER MAINTENANCE. REPLACED LEFT HAND ENGINE AT AFW ON 02/02/2010. SYSTEM GROUND CHECK NORMAL OPERATION. (OPEN)